“What is the efficiency of wireless charging.”
About the same as Level 2 wired charging.
https://debugger.medium.com/wireless-charging-is-a-disaster-waiting-to-happen-48afdde70ed9
efficiency of led bulbs have been preached also. But every good long term led bulb I examine has a huge heat sink and heat dissipation system when it is of size.
The ones without the head sink don’t last long but they are efficient for the moment.
So, cite your source, I don’t believe you.